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dc.contributor.author
Pongpaiboonkul, Suriyong
dc.contributor.author
Phokharatkul, Ditsayut
dc.contributor.author
Hodak, Jose Hector
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dc.contributor.author
Wisitsoraat, Anurat
dc.contributor.author
Hodak, Satreerat K.
dc.date.available
2018-08-15T16:02:34Z
dc.date.issued
2016-03
dc.identifier.citation
Pongpaiboonkul, Suriyong; Phokharatkul, Ditsayut; Hodak, Jose Hector; Wisitsoraat, Anurat; Hodak, Satreerat K.; Enhancement of H2S-sensing performances with Fe-doping in CaCu3Ti4O12 thin films prepared by a sol-gel method; Elsevier Science Sa; Sensors and Actuators B: Chemical; 224; 3-2016; 118-127
dc.identifier.issn
0925-4005
dc.identifier.uri
http://hdl.handle.net/11336/55617
dc.description.abstract
In this work, the effects of Fe-doping on structural and gas-sensing properties of CaCu3Ti4O12 (CCTO) thin film prepared by a sol-gel method were systematically studied. Sol-gel-derived CCTO thin films with different Fe-doping concentrations were deposited on alumina substrates by spin-coating and Au/Cr interdigitated electrodes were patterned onto the films by photolithography, sputtering and lift-off processes. Characterizations by X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Raman spectroscopy, X-ray photoemission spectroscopy and X-ray absorption near edge structure confirmed the perovskite CCTO phase with TiO2 and CuO secondary phases and suggested the substitution of Fe3+ ions at Ti4+ sites of CCTO structure. From gas-sensing measurements, Fe dopants greatly enhance H2S response, response time and H2S selectivity against NH3, CO, C2H2, CH4, ethanol and NO2. In particular, 9 wt% (∼3 at%) Fe-doped CCTO sensor exhibited the highest response of ∼126 to 10 ppm H2S, which was more than one order of magnitude higher than that of the undoped CCTO sensor at a low optimum operating temperature of 250 °C. The roles of Fe-dopant on gas-sensing mechanisms of CCTO sensor were proposed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Fe-Doped Cacu3ti4o12
dc.subject
H2s Sensor
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Metal Oxide Thin Films
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Sol-Gel
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Otras Ciencias Químicas
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Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Enhancement of H2S-sensing performances with Fe-doping in CaCu3Ti4O12 thin films prepared by a sol-gel method
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-15T14:00:45Z
dc.journal.volume
224
dc.journal.pagination
118-127
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Pongpaiboonkul, Suriyong. Chulalongkorn University; Tailandia
dc.description.fil
Fil: Phokharatkul, Ditsayut. Nanoelectronics and MEMS Laboratory; Tailandia
dc.description.fil
Fil: Hodak, Jose Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Chulalongkorn University; Tailandia
dc.description.fil
Fil: Wisitsoraat, Anurat. Nanoelectronics and MEMS Laboratory; Tailandia
dc.description.fil
Fil: Hodak, Satreerat K.. Chulalongkorn University; Tailandia
dc.journal.title
Sensors and Actuators B: Chemical
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.snb.2015.08.113
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925400515302902
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